How 10 Autonomous DeFi Agents Trade Across 4 Chains Without an API Key
Rate limits were killing multi-step DeFi operations mid-execution. Supermission moved to Quicknode. 17,400 requests/day across 4 chains. Not a single failed RPC call.
- 34x more requestsDaily RPC requests, from ~500 to 17,400
- 2s → 50msAverage latency across four chains
- 1,000+ transactionsSwaps, prediction market trades, and agent-to-agent x402 payments
Supermission runs 10 AI agents around the clock. DELPHI executes DeFi trades on Base. ORACLE surfaces prediction market intelligence. HYPERION manages perpetuals. SECURO audits smart contracts in seconds. Six specialist sub-agents handle token due diligence, wallet intelligence, and more in the background. None of them take breaks. None of them wait for a developer to intervene. And none of them carry an API key.
Uitdagingen
In development, free public endpoints worked. Base's default RPC, polygon-rpc.com, the usual starting points. But Supermission's agents don't run simple queries. A single user action triggers a chain of sequential RPC calls: balance checks, token approvals, the swap itself. Each step depends on the last.
Under real user traffic, any one of those steps could time out or hit a rate limit. When that happened mid-execution, the agent stalled with no way to recover. The operation stopped, incomplete.
Rate limits were the breaking point. Not occasional edge cases. A consistent ceiling that agents kept hitting as usage grew.
Oplossingen
Supermission moved to Quicknode.
Core RPC API across Base, Polygon, Ethereum, and Arbitrum gave agents 50-150ms average latency across all four chains. Supermission's wallet intelligence system routes every onchain read through Quicknode: token balances, NFT lookups, transaction counts, and contract metadata. Adding a chain meant updating a config, not reprovisioning the stack.
x402: agents that pay for themselves
The bigger shift was how agents access infrastructure at all.
Via x402, agents authenticate with a wallet and pay per request in USDC. No API keys to rotate. No accounts to provision. No engineer needed to onboard a new chain. An agent with USDC connects, pays, and runs. Agent-to-agent x402 payments are live in production, with all 10 agents registered onchain via ERC-8004 on Base.
Resultaten
Chains: 1 to 4
Daily Requests: ~500 to 17,400
Latency: unpredictable timeouts to 50-150ms average
Transactions executed: 1,000+ including swaps, prediction market trades, and agent-to-agent x402 payments
Multi-step DeFi operations now complete end-to-end across four chains without a failed RPC call during testing.
"Wij beheren geen infrastructuur. Onze agents maken gewoon verbinding en draaien. Quicknode heeft dat mogelijk gemaakt over vier blockchains heen, zonder dat we ook maar één API-sleutel hoefden aan te raken. "Divyanshu Urmaliya, oprichter en CEOSupermission
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